Hey there adiemu,
Thanks for reaching out to Apple Support Communities. We understand you’re hearing a popping sound from your MacBook Pro. We understand how this could cause some concern and we’ll be happy to help.
It sounds like this like this issue would need to be looked at by an Apple Store or Authorized Service Provider for further diagnosis. For info on if this is covered by warranty and preparing your Mac for service, please review the info in this article:
Mac Repair
Then you can use this link to help you locate a service center near you:
Find a Store
You can also reach out to Apple Support to help you set up service as well:
Contact Apple Support
Due to Covid, you may want to review these articles as well:
Apple’s approach to reopening stores
Temporary Retail Store Closures
We hope this helps.
Take care.