I had the same experience w/tabacco.I started buying my tobacco by the pound and rolling my own cigs about 3 yrs ago.About a year or so after I started I waited too long to order & ran out and had to smoke store bought for a few days.First I bought a brand of generics that I used to smoke and could'nt stop hacking.Marlboros were'nt much better & seemed harsher than the cheapo generics used too.I never realized they put so much chemicals in it but I will never smoke store bought cigs again.