Op there isn't a variety of opinion at all
Its pretty much 98% this is a disgusting selfish thoughtless thing to do.
For about 2 minutes dd was grabbing his big fat slobbering tongue and it was gross. Everyone was silent and didn’t say anything
OMG.
For me - this happens with FIL.
Fil and Mil are ABSOLUTE GERM FREAKS...they have made DH life utter hell.....Fil will zero in on minute crumb on the floor and question how it got there.
Mil will freak out over all sorts of germ related stuff....she stands over you nervously taking shoes off before allowed in...she has banned people from using certain sinks...she is ULTRA germ phobic and yet.
Days after months long nasty virus - including blood tests, urine tests, the dramatic loss of weight..no one knew what it was - unusual days in bed.....FIL FED MY DD THEN 4 OFF HIS BLOODY FORK.
I was in shock and horror mode.
Op I actually raised this with a Relate counsillor as ONE of the things they have done that has shocked me.
He said once we have said - FIL would you mind not doing that please, the next time he does it - calmly take the child from him, if questioned say calmly - " I asked you to stop it and you persist, therefore I must take the child. " then stop the child sitting in lap etc.
OP the weedkiller has probably shocked me even more. I cant imagine what strong and harmful cancerous chemicals will have gone onto the baby.
They are going to get worse and I am afraid you will need to along with your DH shore up and stop their party.
When you ask something you cant allow them to ride over you.
You have to carry through, eg please dont suck his hand....she persists you have to go over and physically take the baby back , wash his hand and say nicely " I said not to to that"
Same with the weedkiler - " No, maybe you didnt hear me, please dont touch him or wash your hands first"
Op my baby (2nd)was born in winter, norivirus flying around, scarlett fever....flu...I always asked people to simply wash their hands....it fell into two camps, the ones who didnt take it personally and understood the horrors of a sick baby....and the ones who took it personally and over the top etc.
They were the arrogant unpleasant ones.
I would have no issues washing hands before touching baby and in fact we are going to see a new born soon, I will ask my DC to wash their hands as well before touching him, if they do touch him.
Your mil with her incredible brazen behavior has put you into this awkward spot - along with so many of us dils...caught between trying to be diplomatic, civil...keeping the peace.
Its not your burden though, if SHE hadnt done this IF THEY could respect YOU you wouldnt be in this position so dont you feel embarrased and make sure DH is on board.