Hi to all of you ! I was wondering if you could all give me some advice please? My mare Jazzy has a slight,runny nose that comes and goes. It is very small amounts and not every day. It is clear and watery. No other symptoms of anything. She is eating great as usual and we are riding everyday like always, and she still has great endurance and speed, the same as always! When it is hot we ride really early(5-6am) and/or really late(7-9pm) so it is nice and cool for her.She has no cough.Well maybe twice(2 coughs I have heard!) in a month. She is up to date with vaccines and her worming is current too. I thought maybe just dust but what do you all think? I appreciate any help with this.....thanks again you guys!