Why is my microphone not working?

Everything else works. I tried pairing it to other phones that didn’t help. I tried blowing it out with air compressor. The microphone worked for about 30 seconds. People say they can hear some background noise but not my voice.

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@heather9443 just to verify, your headphones are Bose QuietComfort 35 II

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I have Bose Quiet Comfort 35

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