Baby exposed to marijuana!?

Okay. Here goes.

This evening when I got home from Target with my 10 month old son I noticed a pretty strong odor of marijuana as I approached our apartment building. It was EXTREMELY strong when I got to our door and I struggled for 2-3 minutes hunting for my keys in my purse. After I got my son inside I went to walk the dog and discovered my neighbor on his patio smoking a blunt. He was around 20 or so feet away from my son and I as we entered but the smell was STRONG. My son did seem a little loopy afterwards. Could he have caught “contact” off that? Should I be worried about him? I have no problem with weed...just don’t do it personally and definitely don’t want my 10 month old to 😂🤦🏻‍♀️