I've been ordering a lot of books lately from various places, and I also have gotten a couple of packages from my parents and some dye that I ordered.
About the last five packages I have gotten have reeked of cigarette smoke. They may have before and it just wasn't as noticeable; I don't know.
All of these packages have come from different places, and I KNOW my parents, at least, do not smoke. So my guess is our package carrier smokes in his/her truck. It's not such a big deal since I'm ordering things like books and dye that don't really hold a scent too well, but what if I was ordering clothes?