There's substances kept under the kitchen sink that are far deadlier than than the ones I develop film with .
As said , use sensible precautions and the risk is all but removed .
I have used chemicals that need special treatment and PPE that I certainly wouldn't use in a kitchen , but this isn't about them .
The people that are watching the video posted aren't using those chemicals either .
The readily available developers used in the correct manner are safe .
Just to avoid confusion , maybe we should point out that your not using the same utensils that you prepare food and drink with that you prepare the chemicals for developing with .
Likewise , you don't have a jug or orange juice in one hand a jug of developer in the other . That's the common sense bit .
After that , your into natural selection . ;)
But I'm sure you didn't believe that that is what was being suggested ?