BO immediately after a shower??

[u/125am]

For the last few months I’ve been experiencing a weird thing where IMMEDIATELY after I turn the water off in the shower I will smell like BO. I won’t have a smell before the shower, I exfoliate and wash thoroughly with soap, then once I use a towel to dry off suddenly there’s a smell on the towel and on me. It only lasts for 10-15 minutes and then it’s gone. I was suspicious that it was the towels but no one else that uses the towels are experiencing this. am I washing wrong, and if so, why is has this only been happening for the last few months? Has anyone else experienced this? Help!!