If the airlines would simply bring back smoking on planes this would not be an issue.

Simply take your e-cig to the lave. No smoke alarm will go off. Puff away! ^

Airlines also should ban gum, chewing tobacco, perfume, dogs, cats, kids and old people (myself included). OK, the kids can stay, but 5 rows away from me. Old people 3 rows away.

Dogs and cats need to stay home or be put in the luggage compartment. Some people are allergic. If not, bring back peanuts!

The only part of this post that is serious - puff away in the lave. It is not smoke, only vapor. The allergic part is correct as well.