Yeah, that part does not smell like a summer breeze, but hey, I buy me not to have Hong Kong Rubber Latex horse mask to a pleasant scent in the nose.
Did it put a few hours in the garden and could then easily withstand it; but maybe it is, like all latex masks, not for asthmatics and people with suitable respiratory problems.
So that part is worth it, really is a great gag, looks really cool, so really after the horse and just fun!