Smoking combined with Covid is not a good combo. Lungs seems to have taken hit. Last night had a dream where I was hunted to be poisoned so that I could not breath. Woke up with hard to breath. Yesterday was already almost over the Covid but today is a step back. I had just been training swimming 25m interwalls with one breath and also diving 25m with dolphin/mermaid kicks. So I trained myself beforehand to work without oxygen. It has it's plussd and minuses.