If someone in your house was sick (strep throat or a virus) and had to stay home from school/work, would you send the healthy siblings to extracurriculars and activities?

As background, DS1 (3.5) was sick over the weekend. We kept him home until he was symptom free for 24 hours. DH got the bug and ended up with strep throat. He's been in bed since Monday. DH says I shouldn't take DS1 and DS2 to swim lessons tonight because they might be contagious.

The kids have no symptoms. I have no symptoms. I had my throat checked at work and I'm completely clear. So my question is, who is right? Can I finally get out of the house?