My gf’s breast stink

It was a normal day and me and my gf met up at my house. Sooner or later we began to cuddle. When I went to lay my head on her chest I smelt a devious oder.

It smelled like a rotten corpse mixed with expired milk.

I then got up and went to the bathroom. What should I do? How do u tell her?

UPDATE: I told her and it didn’t go well at first. She was very sad that I told her she smelt bad since that’s one of her biggest fears, but once she smelt herself she understood what I was saying.

She said she took an everything shower and didnt know what the problem was. We then checked my house and found nothing so we walked to her house that she just newly moved into and began to smell the oder once again.

We continued to walk until we got to her bedroom to where the oder was at its peak. We searched but couldn’t find the source until my gf found a small crack in the wall from which to oder was pouring out. I took my phone flashlight and looked through the wall to find what looked like an eye ball.

We jumped back in horror and she called her parents and siblings to come over just incase. Soon me, my gf, her 2 younger brothers, her mother, and her father were there. Her father began to tear through the wall in which dust partials poured from it. Then there it was, a carcass fell out the wall onto the floor.

Horrified her mother frantically pushed her brothers out the room and called the cops.

Rn were waiting for them to arrive but atleast we found the source of it all😅

⚠️UPDATE NUMBER 2⚠️: to wrap this all up it was a human carcass. My gf house walls are thick so that’s why she most likely didn’t notice. She changes in the bathroom and when she was going to it she dropped her top in the her room. So then she asked her brothers to get it while she was in the shower.

Her brothers rough housed in there and created the hole, then gave the top to her. Ofc she didn’t smell it because when out the shower her body soap overdid the the top smell. The brothers didn’t smell it because they ran out of there as soon as the hole was made(they were scared to get jn trouble)

When she left she didn’t smell it since today was windy and she was fighting for her life against the wind so she didn’t notice it then.

Now that, that clears things up Right now in present me, my gf, and her brothers are all at my house in the living room. The cops told us to leave the premises but her parents stayed for questioning.

I’m thinking that they will have to move again since they’ve been there for 4 weeks.