SMC reset without power button

I watered my MBA a few weeks ago and it stopped working. After a proper cleaning procedure and replacement of the keyboard, it started working again but a few problems have arisen:

1) fans moving very fast and not quitting at all

2) power button not working

3) when fans are on, the MBA is very slow

I would like to reset the SMC in order to understand if I can reboot the system somehow; however, the procedure includes the pressure of the power button.

Is there any possibility to reset the SMC without that button as it doesn't work?

Thank you in advance!