No, currently acknowledging an alert only tells the platform that you have seen the alert.

If you have an alert set up in conjunction with your Smart Cleaning Report, you will actually have to go into the 'Smart Cleaning' lens in Building view to 'Mark as cleaned' a specific sensor.

Alternatively, if you have cleaned a whole floor then you can click on the 'refresh' icon at the top of the screen like in the image below to mark all sensors as clean.

A pop up will appear asking you if you are sure you want to continue reseting all sensor 'Needs clean' states to 'Does not need clean'.