If the roll up doors are inside, and the problem is dust do the following: use a very soft bristled push broom (you don't have to use the handle) and a lambs wool duster. Used in combination, they work fairly well. That is what (achoo, excuse me) I am using now.

As for the sneezing, maybe a dust mask. If it is outdoor roll up doors, eithr=er a steam cleaner or cheap labor with soap, water, and rags.

Astro