Soap residue - Nebulizer

Hi. I am traveling now and have been soaking nebulizer equipment in Dawn and then rinsing well (I thought!) and drying, using only 2x per day and then moving on to another cup set. I noticed - after a minute or two and some burning in the throat - that the levalbutirol solution in the cup was bubbling more than usual. I realize I must not have rinsed the Dawn as well as I thought I had! So, now my anxious Bronchiectasis mind is worrying about having introduced that potentially into my delicate lungs! I usually make sure to stay in places with stoves, etc., but hard in NY! I nebulized saline straight after and airway clearance but wonder if anyone else has "slipped up" like this and what they've done?

Thanks!