I was looking at the mayos last night at the supermarket and all but one ( praise fat free) had egg in them even the ones that are not labeled whole egg mayo. The kraft original and the praise original both contain egg if you read the back. I'm guessing that they have been heat treated though so the egg would be cooked.
The only thing I didn't eat from maccas was the thickshakes.. I did have the odd Sunday.
But I have not eaten maccas fir approx a year after it gave me a gall bladder attack and I was hospitalized for a week after having my gb removed... Can't bring myself to go back!!