There is a health forum that might be a better place to post your query. I'd also include things like-what age is Moomoo? Eating and drinking ok? Watery eyes? Off-color wattles? Walking ok or kinda wobbly? Listless or active? Acting normal except for the sneezing? Any changes in weather or food lately? These are things that can provide the info needed for a possible guess as to the problem. Hope you find your answers.