Girls, we have a runny nose, what should we do?? Tears from the nose?…

Girls, we have a runny nose, what should we do?? Tears from the nose??? since yesterday. We drip Acqualor. Before that, for several days he coughed. No temperature, only because of snot barely breathes A couple of weeks ago, they got sick with obstructive bronchitis, took antibiotics and recovered. And now this?