I met a lady who was an excellent quilter who developed a fabric allergy.sneezing and wheezing .she gave up her hobby. Could it be washing powder if it's a new one or company have changed its ingredients.
In the last few weeks have you purchased any new items.
It can be quick and stop as quickly. I went to flower arranging and was sneezing all the time. At the interval I just stopped but restarted again as soon as I entered the main room. why it must have been one of the tropical flowers I had never met before as only hyacinths effected me
Keep thinking about any item in the house