The tobacco in cigarettes is a favorite home to millions of bacteria, hundreds of which are responsible for human diseases, alarmed at the University of Maryland.
Almost all studies to date have focused on the harm of tobacco smoke on the body. It turns out that not only nicotine and tar are hazardous to our health - a crop continuously stuck pathogenic bacteria.
Whether they remain alive and after treatment in cigarette factories has not yet been proven, but if so, just touch the infected butt or even one puff is sufficient to cause infection.