It might have been a restaurant, but it was some sort of political rally, so he was in ‘forgiving’ territory.
The “Smart Virus” Knew not to infect people because it was a rally, and being ‘sophisticated’, unlike we peons, he ‘knew how to stay safe, even in close contact’ according to the left who excused obama’s party-goers by claiming they were sophisticated and smart and so woudl be safe (despite everyone being elbow to elbow- cheek to cheek practically)
The virus is so smart- it can tell when ‘important people’ are gathering- and it avoids them