Child coughing

Only our second child has a bit of a cough.

Although not often, whenever my family goes somewhere together

Even at home, only one child is coughing..

When I was young, I had ten games and underwent a tonsillectomy.

It's also not good to take medicine every time I cough.

It's hot, and I can't even turn on the air conditioner.

They don't even turn on the fan while sleeping.

Is there anything good for cough?