Disable zoom on iframe of embedded PurpleAir map

Can someone help me with this please, I have embedded our PurpleAir sensor onto our website with an iframe, I would like to disable the automatic zoom on our map so its locked like you see on most website embedded google maps, when its locked if I want to zoom in a pop up appears that prompts me to hold down the command key first and then scroll on the trackpad to zoom.

You can see on our contact us page the google map zoom feature is locked


and our PurpleAir map the zoom feature is unlocked


This seems to be a recurring problem for people who want to embedded maps on their website, there are many forums about it but I can’t find a solution for our website

At present the source code on our website for our PurpleAir map is: