Dad falling asleep with baby on chest

I’m not sure why I’m writing this really but I feel really upset with my husband this evening. He has a habit of putting my daughter on her stomach on his chest when he’s lying on the sofa in the evening. Tonight I went for a shower and checked with him first that he wasn’t going to fall asleep as I’ve caught him drifting off a few times and I know how dangerous it is (as does he). I came down from my shower to find him fast asleep. He knows I was annoyed about it but isn’t showing any signs of guilt that what he did was extremely dangerous. I told him if he’s feeling himself getting tired, just put her in her crib. Again I’m not really sure what the point of this post is but it’s just making me really anxious to leave her with him. I know he would never ever intentionally harm her as he’s a brilliant dad and loves her to pieces, but this is so dangerous. How can I go out for an evening let alone go upstairs for a shower. I was going to send him a load of links to stories where babies have died in this situation but I don’t want to appear aggressive or scare him, I just want him to realise what could happen.