are you sure this isn't suppose to be like this?
Download Toomanyitems 13w02b (he makes it for snapshots too)
you can make a nausea potion.
the thing about the nausea potion is that it makes your screen wobble around but doesnt show the nether potal tint as if you were in a nether portal..
so the bug is that when you drink milk it does get rid of the effect but your view looks like you're in the nether portal for like .5 seconds
yes the nausea EFFECT IS in the game. you can get it how ever you like..
dinnerbone made this happen for map makers.
so the Nausea potion is in the game and it works and this is a visual bug thats been here since 1.4.2
this is an intended thing. imagine a cart full of explosives derails.. Run for your life.
Delete?
I swear I looked it up..