How do i get rid of this smell when microwaving my meals?

I have 5 meals prep each week, and every time that i warm it up it smells a lot like i'm burning something. <br><br>What i have done so far:<br><br>I've tried to change containers but still that smell is there. <br><br>All my meals are ready after 1m30s to 1m50s. <br><br>What i'm looking for: <br><br>Any tips that would help me to get rid of the smell, or is there something that i'm doing wrong? <br><br>Thank you :)