I've noticed that since I've quit smoking, I get really annoyed when people smoke around me or when I have to walk through an area where people are smoking. I hate that I come out smelling like smoke even though I wasn't the one smoking. Just being exposed for a few seconds the smell will stick to my clothes and hair (and I am a person who loves my clothes to smell like detergent and my hair to smell of shampoo!) . I now see how annoying it is for a non-smker to have to walk through the smoking area of a business (or the entry way of some buildings).