Smoke Signals

I'm working in the store today, and it's very warm. Two of the walls are glass and they magnify the sunlight. It's soooooooo warm.
Also, it smells like cigarette smoke in here. This is very frustrating because it's not coming from inside or just outside the store. It's actually coming from the air vents. Which means that some idiot has decided to take his/her smoke break right by the air intake. I really want to go out there with a sign and a blunt instrument.
Do I sound nasty? Sorry.
I was having a good day up until the cigarette smoke. This is the 2nd time this week.

My only consolation is that cigarette smoke is BAD for that person.