3 related posts on this:
1: https://community.hubspot.com/t5/HubSpot-Ideas/Removing-HTML-language-from-meeting-description-in-Custom-Report/idc-p/743717#M133004
2: https://community.hubspot.com/t5/HubSpot-Ideas/Remove-HTML-Tags-from-Activity-Notes-in-Reports/idi-p/573596
3: https://community.hubspot.com/t5/HubSpot-Ideas/Avoid-HTML-code-showing-in-quot-Note-Body-quot-property-in-table/idi-p/515242