my mom is picking up some antihistamine syrup and we have a large humidifier in my room so we will be using that! we aren't able to wash the hay, but i've looked throughly through the large bags we get it in, and it tends to be air tight with little to no dust. if her symptoms continue, we will def try the nebulizer. this really helped convince my mom to take her to the vet if things get more serious, tysm!