Give three versions of a question to determine whether people think smoking should be completely banned in

Question:

Give three versions of a question to determine whether people think smoking should be completely banned in airports. Word the question to be as follows:
a. Version 1: As unbiased as possible
b. Version 2: Likely to get people to respond that smoking should be forbidden
c. Version 3: Likely to get people to respond that smoking should not be forbidden