I have been suffering with Long Covid for over 3 years now. So far, to treat this I’ve had Acupuncture, 7 Stellate Ganglion Block Injections and am currently wearing a 7 mg Nicotine Patch and having Green/Red Violet Laser Light Therapy through my Chiropractor’s office in Geneva, Il. I lost my taste and smell with this dreadful virus and am using this light therapy to regain it. I have noticed some days, I can smell more often, quick whiffs of certain things like a candle burning or my coffee grounds or a quick whiff of my perfume. It doesn’t last and that’s how it’s been for a long time. Make sure it’s Green “Violet” Laser Light Therapy. There is a difference. I also suffer from Hashimoto’s and Hypothyroidism. I have eliminated several foods from my diet to control the Hashimoto’s and it has helped quite a bit. I wish you much success with this light therapy you’re having, but again, make sure it’s Green Violet Laser Light Therapy, not just green light therapy.