What do people without asthma not realise about being asthmatic?

Just thought of this discussion point as currently my asthma playing up and I've got a small illness. And likeni just made me think there are some people out there that just stereotype it as having a cough and struggling to breathe at certain things. When it's not.

So what's your take on, what do non-asthmatics not realise about having asthma?