Mouth odor rash and cold. Cause this?

Hello. My daughter us 4.6 yes old. Female. Weight 20 kgs. She has bronchitis and I visited the paed yesterday. Cos she has wheezhing cough and cold, doctor advised levolin puff for 3 days, budecort puff twice for ten days. Brozedex for 3 days. She's definitely better today and was able to sleep better last night. She has no fever. She's active otherwise. She had developed rashes on the edges of her lips cos she keeps rubbing it and also has cold sore type rash. Her mouth seems to stink a lot despite brushing twice and giving lots of fluids. Can the cold cause this? There seems to be no visible infection inside her mouth or white spots. Please advise. Will the sink reduce as her cold and rash clears.. I'm applying zytee gel on the rash. I would be grateful for any advice. It's flooded here and am not able to go to the hospital today.