I coughed quite a bit when I started vaping, even on very low-performance gear.... If she really "walked through a cloud" it's surely not out of the question. It's not like she was on the other side of the room. And given the follow-up she certainly didn't sound like an unreasonable person.
ETA: In an attempt to get this back to the OP.
CVS is playing a carefully orchestrated chess game. They want a closer alliance with BP because they believe it will give them an inside advantage. They are working on expanding their pharmacy role to a wider "health-care-stop" approach. (They already give Flu and Shingles shots, for example).
They are dumping cigarettes because they expect to make up that (and more) by deepening their relationships with Pharma, Doctors, and Hospitals.
Don't kid yourself about it being "Good PR", that's just a side-effect. The real story is a behind-the-scenes move.
copy that :cheers: