"I hope to goodness my concerns are misplaced and everything will come out in the wash, " Mr Lewis added.

BBC: School canteen

"We think the effect will be minuscule, and will come out in the wash in the end, " Mr. Tombs says.

WSJ: Economists' Royal Wedding Jitters Don't Add Up

If they are problems, then send the smokers outside to a spot far away from where the patients come in and out, or have them wash their hands and faces, which everyone ought be doing anyway, and only give them the same breaks from work that everyone else gets.

CNN: Barring smokers from hospital jobs unfair