A:Answer Hello Jack,
Thank you for reaching out and letting us know your inquiry if this Samsung microwave has an exhaust fan. We understand that this information may be essential for you. We're here to help.
This microwave has a Vent Fan which protects the microwave from excess heat per checking.
For reference, attached is a link to the user manual containing additional information about the product. See page 15 to know how to turn on the vent fan.
https://downloadcenter.samsung.com/content/UM/201906/20190627105646378/ME21M706BA_ME21R706BA_AA_EN-MES-CFR.pdf
You may also check the helpful link below to know how to use the vent on your Samsung microwave.
https://www.samsung.com/us/support/answer/ANS00087683/
For other concerns, do not hesitate to reach out via our Support Channels below:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.commuity.samsung.com/t5/Samsung-Community/ct-p/us
Thank you, and stay safe!
Your Reference Ticket Number: 1144279917
-Angelica