Such is why I have poop trays under my roosts, filled with sand, easy to clean (and no bending down) just like ya clean a cat box.The only thing smelling of ammonia was the deeper litter, under the roosts. Her coop is actually extremely ventilated. It basically has half walls, with lattice on the upper portion (covered with chicken wire) and a roof. The roosts are below the top of the half walls, so there won't be wind on the birds; I couldn't smell the ammonia until I had my face right down by it after digging it up a bit with the rake. I don't think any harm was done as it was all buried. But yes, I think she'll be happy that she didn't have to do this on her own, or ask her husband to; he's not really keen on the chickens.
And yes, I did practice good biosecurity. I washed my boots with a bleach solution before and after going there, and before coming in the house I took off my soiled clothes in the garage and put them in the washer. I showered right away and got all the dust out of my hair and skin.