I have heard that COVID can have some longer term effects on the lungs, so congrats on going out and hiking. 40C equals 104F, WHAT!!!!!!! What in the hell is going on up there! I imagine few places ever bothered with air conditioning so life is miserable at that temperature.
Wish you good health and speedy recovery.
RE: Canadian Rockies: Chasing waterfalls, unicorns and rainbows in Jasper National Park