A proper exhale of a vape hit should only be a light vapor....any "smoke" is a sign of overheating of the herb.
That being said, after vaping for over 10 yrs, I still sometimes like a little smoke as a sign I actually got a hit...but it's usually the taste that's my fav sign.
I started vaping to avoid the smell of combusting herb. Went through several cheapo vapes, now using a magic flight launch box when mobile, and an extreme q at home. Damn bags from the q can make you silly but I love it.
The draw off a vape is as important as the temp and it takes a bit of practice to get it all right but it's far better than combusting so well worth the effort.