Yes a study for commerical birds.What damage to a chickens lungs is done by the inhalation.
What damage exposre to fine particles does to the chickens eyes, ears and throat.
I would also want to know what risks there may be to my health by breathing in sulpher dust.
I believe when birds dust bath with fine powders they close eyes and throat when it's flying around.
I used to poof my birds with a duster and the sulfur is about the same as poultry dust they sell in shaker cans. I just put sulfur t in the dust bath now. I think anything we would use should not be inhaled, weather it's a mist or powder.