What I use and recommend: (Links Below)
Portable Nebulizer: https://amzn.to/3ytY9JF
Saline Solution for Inhalation: https://amzn.to/3ypoXuM
2% Iodine Lugol's Solution: https://amzn.to/3GHksyi
Food Grade Hydrogen Peroxide 3%: https://amzn.to/3IJIHhb
Medicine Dropper: https://amzn.to/3DU31Zw
Fingertip Pulse Oximeter: https://amzn.to/3pZWI1Y

Amazon Brand Hydrogen Peroxide 3%: https://amzn.to/3IX8IKe
Fine Mist Plastic Spray Bottle: https://amzn.to/3ylG0xI

Essential Oil Diffuser: https://amzn.to/3ymydQ9

Whole-House Evaporative Humidifier: https://amzn.to/3pWxlxF

I share what I've learned and do using nebulized hydrogen peroxide against colds, flus and upper respetory infection.