Martyn’s original post refers to the “disgusting smell or stench” – there are other nasty smells around airports. Two that particularly wind me up are:
Perfumes in duty free shops. I object to airports making us walk through shops that stink like a tart’s boudoir to get to the lounge or the gate. It is more likely to set off my asthma than the smokers’ alley problem.
Chewing gum. Some people apparently like the strong mint smell that most chewing gum has: I don’t. It makes me feel sick. I would welcome a chewing gum ban!