Xbox one s fan makes hissing noise?

Hello I've had my xbox one s for 4 months and I noticed when I wanted to insert the CD that a hissing sound comes from the fan, that's normal

Maybe you have a snake in the device? 😂

Well, just open it up and clean it if necessary. If it does not go away, the fan may need to be replaced

Have they been there for 4 months, if I opened them the guarantee would expire

Then just exchange