How To Remove HTML from Rich Text field so it doesn't show in Email Notifications and Headers, etc?

Hello, does anyone know how to hide the HTML formula in a Rich Text Field from displaying in column headers, email notifications, etc?

See attached image 1. You can see that the HTML is showing at the beginning of the "Sample Data."
See attached image 2. You can see that the HTML is showing in the email subject line.

Can this be masked/removed so only the data is showing?

Thanks!

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Josh Collins
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