"There’s no fiberglass in cigarettes. Granted, RJR (R.J. Reynolds Tobacco Company) did try using a fiberglass shell on its flopped smokeless cigarettes in 1994, but that part of the contraption wasn’t ingested by the smoker; it was more of a housing, if you will. Other than that, no fiberglass."
snopes.com
Bob
I can't remember if I relayed this story on here or not, but just came across this post and figured I would share my experience with finding what I can only describe as a "nest" of fiberglass upon opening a 1lb bag of RYO menthol tobacco from Smoker Friendly in the first couple months I had switched over to RYO prior to growing my first (and now second) crop in sufficient volumes to support my roughly pack a day usage. I've been a menthol smoker for roughly 29 years, and my high school graduating class was referred to as "The smoke free class of 2000" nationwide as the result of some campaign in Washington DC, every single year of k-12 education we were bombarded by anti-tobacco propaganda, some of which was informative and accurate, much of which was not. I also grew up in the South, which meant my choice to smoke menthol's came with the stigma and racism because "That's what the blacks smoke", which never bothered me in the sense that I assume it was intended by the racists who chose to use that as a shaming mechanism, but it did mean that I heard every nonsensical wives tail and urban myth associated with menthol cigarettes you could imagine, and mostly dismissed them as complete non-sense as i was never provided any evidence one way or another. That is until 20 years after moving out of the south, when I started to roll my own cigarettes, I had planted my first crop at the time but was a long way from being able to smoke any of it, which hadn't stopped me from researching how I would eventually accomplish making my tobacco menthol flavored... which is when I was first introduced to "menthol crystals" which are the chemical "menthol" and nothing else that has been isolated from a plant called variety of mint that as far as I can tell is used for little else than a source for menthol, called Corn mint.. when researching how to apply the menthol to the tobacco I learned that menthol evaporates at very low temperatures, somewhere around 90F, and this low temperature is used to the advantage of menthol producers who simply add the required amount of crystals to their tobacco blends in a sealed chamber and heat it lightly causing the menthol to become a gas, and turn the chamber a few times to distribute it and then cool it back down so the menthol gas recrystallizes onto the tobacco, (same process is used to infuse menthol in to the filter material)..
Having learned that information, but having not yet been able to apply it, I was still purchasing my RYO tobacco, it was late summer in southern Colorado, 100 degree days, 50 degree nights, tobacco store had been my first stop in a string of errands so sealed RYO tobacco was in hot truck for a couple hours prior to getting home, i had run out of smokes prior to running errands and was anxious to get a cigarette rolled, so tobacco and tubes came into the house first, and sat while I unloaded the rest of stuff from the truck... and when i cut the bag I was genuinely shocked, I'd never seen anything like it... the best way I can explain it was if you've ever seen a piece of plastic bailing twine get caught up around any spinning shaft that just beats the tar out of it into individual tangled matted nest of fine plastic shreds? or a piece if old school layered fiberglass panel that's been busted apart by folding repeatedly? there was about a tennis ball sized nest of material that looked exactly like that sitting on top of the tobacco when I opened the bag... there's not a whole lot that strikes major concern in to me, this was alarming enough to trigger the "oh man someone at the factory really screwed something up with this one, i'm never gonna have to buy tobacco again"... I reached for my phone to take a picture, realized my phone was dead, and promptly scambled to get it on the charger and a few minutes had gone by and I powered it on, switched to video mode and started filming, and quite literally as soon as I hit record, through the view finder on my phone I watched as the crystally looking tangled nest of fibers just vanished into thin air... I was completely sure I was having full mental break down at that point, I had never seen anything like it, just "Poof" gone, in a matter of seconds....and after calming down, and accepting that I would likely not be the recipient of a lifetime supply of free tobacco i had to figure out what the hell i had just witnessed... And the best thing I can come up with is that in the heat of the truck the menthol vaporised in the sealed back, and then upon being brought inside the void of empty space at the top of the bag was cooled more rapidly than the portion of the bag containing tobacco, so thats where the menthol was able to recrystalize first, and without tobacco being mixed into the "nest" of menthol crysaline fibers.... And all of a sudden a light bulb went off in my head, "Ohhhhhh i'll bet peoples stories of experiencing similar situations involving menthol tobacco, either at the factory, or in their own tobacco etc have all sort of morphed into this urban myth that menthols are made with fiberglass.....