When i was on vacation in Maui I went scuba diving with my dad, my brother, and myself for about an hour, only like 15 feet or less under the water.

The day after both my dad and I got sick.

He has a really bad runny nose, and I got that and a cough.

Could this be a result from the dive?
And if so, why?

Colds are caused by viruses however, the diving could’ve lowered your immunity