I\'m not sure if a TB mask would be much help - the TB mask is good for particle sizes of 1-5 microns, whereas the particle size of smoke can be as small as 0.01 micron. You might adversely restrict your air intake without benefit, if indeed it is the smoke that is causing the irritation.
The types of masks which filter smaller particles have cartridges. They are uncomfortable and cumbersome and I don\'t think asthma sufferers should wear them.
(I have a mask at work for the yuckky chemicals we sometimes use.)
There is one kind of incense that absolutely derails the choir. Fr Joseph has stopped using it, I think... I hope.
Perhaps you could carry a small folding paper fan and use it discretely to help dissipate the incense when it passes by your area.