[Will0W783]

I picked him up today- I've been away since Friday and my fiance was home with the snakes- and when I picked him up he hissed and bubbles came out of his mouth. But I didn't hear any more wheezing, just that first set of bubbles when he hissed the first time. Should I be concerned about an RI? There's no open mouth breathing, no wheezing (you can hear him only if you strain really hard) and no bubbling from the nostrils. I figure I'll keep a very close eye on him and see if he eats tomorrow when I feed everyone. I don't know him well enough yet to go prying his mouth open to look in it if I'm not sure it's necessary. What do you guys think? His temp is about 85 hot end with 70% humidity.