'Colds' that a child has, can EASILY be really detrimental to other kids!
YES, I would tell other parents if my kid were sick and their kids were wanting to play or my kid was going up to them. Say in a store or something. And if my kids are sick and I am somewhere with them that can't be helped, I tell them to stay away from others/other kids and to cough or sneeze in their elbow. They do.
If my kids were sick, I would not have them at a park.
AND if the child is an infant or baby or any child... YES I would keep my kids away from them if they were sick, AND tell that parent head's up my kid is sick.... like if I were at a store or something getting them cold medicine.
Of course, I would warn the other parents.
Why not?
And yes, if my kid were just sneezing due to allergies, I say that too.
To clarify.
And I do NOT like my kids, being around other kids who are sick and out and about at a park.
I tell my kids STAY AWAY FROM THAT KID, THEY ARE SICK. And their mucus is getting all over the place and on everyone.
Germs are not good spreading it around to other kids/parents... when knowingly doing it.
Geez.
I have Asthma.
IF and when I get sick... it can be VERY VERY VERY serious. Even if I have a common cold.
I detest... kids/people who are sick, and knowingly just go to school and spread it around and just sneeze and cough all around the place without even caring that they are infecting people.
I HATE that.
I ALWAYS will ask "is your child sick?" I have NO shyness about that.
Not at all.
And I will even tell my kids, in front of said person, too.
And, even if a kid seems sick and is... you don't know if it is Pertussis or Croup or the Flu or something else that is highly contagious or not.
It is highly irresponsible, to allow a child to be around others when sick. When it can be prevented. Like, not taking your kid to the park when sick.
Simple.
Stay home.