@sugarsprink This animal is clearly fine. Please dont say stuff like this without knowing everything. Horses can be completely spook proof and their handlers know what they can and cannot handle.
If you do things like wearing Under Armor + a balaclava, showering before suiting, hydrating, taking breaks to cool off, and spot cleaning when you're done suiting, then you're doing fine and you don't have to throw it in the washing machine after every use