Does urine smell wear off over time?

-Not really, will tend to get more intense and then gradually go away. If you are around it you'll notice it less, but anyone else walking in would tell. Hydrogen Peroxide will help break down urine leakage on a bed, and also eliminate the staining if done within a few hours or so of the accident. Though if you have bright colored sheets test it on a corner first since it can bleach some fabrics a bit.Not really, will tend to get more intense and then gradually go away. If you are around it you'll notice it less, but anyone else walking in would tell. Hydrogen Peroxide will help break down urine leakage on a bed, and also eliminate the staining if done within a few hours or so of the accident. Though if you have bright colored sheets test it on a corner first since it can bleach some fabrics a bit.Yeah, usually after a shower or bath.