yes,your answer help me a lot,thank you.

It means 'people's feeling doesn't have on/off switch so it(feeling) can't be controlled' Don't know that it helps you or not but i hope that you will get it a little bit better If you still confused, feel free to ask Good luck!

thanks

ปุ่ม in this sentences is switch for turn on/off. ปุ่ม means bottom or somthings Protuberance .