I don’t remember about a Q-tip but Graham Ledger had a doctor on his podcast who recommended nose spray with an iodine solution. The podcast is Ledger Report #1117 and can be found on Rumble.
The doctor’s name is Jane Orient if you want to check her out.
There's also OTC Xlear, a Xylitol based spray that is a candidate for EUA because the FDA proved it's efficacy or preventing the Rona. It's also super easy to make at home.