RF from a microwave could be a jammer for a short distance but it is not a danger to you if you dont crawl inside of it.
Years ago I used to be a field engineer for the RADAR division of General Electric Co. One of our products was the AN/FPS-6.
It was a height finder with a power out of 5MW peak power,1KW average. We used to like to stand in front of the antenna and watch a florescent bulb light up while held in our hands as the beam passed over us. This was before safety people invaded the industry.
I am 86 now and still kicking. I had a skin cancer recently but that was likly caused by exposure to the sun. The radiation from the sun is quite a bit more dangerous than RF