agus gave kudos to Marcos in js/adware.agent.aw
Please always provide logs collected with ESET Log Collector so that we have detailed information about the detection and your ESET configuration.
You can try:
1, Disabling syncing in the browser options
2, Disabling browser extensions
3, Trying another browser and see if the detection occurs with it as well
4, Uninstalling the browser including the user profile and installing it from scratch.