The table on the label of Malithion refers to direct spraying of the crop, in order to protect it against an insect. So any slight residue left over by the drift should be pretty insignificant.
If you still feel uneasy about eating the veggies, just wash them in cool water before using.
FYI Malithion is still one of the most popular insecticides on the market, and if you have bought any veggies or fruit at a grocery store chances are you have already been exposed to it.
Personally and those who know me here will attest that I have no problem with the use of chemicals, as long as they are used correctly, but I really hate the blanket spraying method of controlling mosquitos. On a single property basis it is not that bad, but by doing it through an entire town or city, they will be messing up the ecosystem. It not only kills the mosquito but it will take out any other insect it comes in contact with. There are a lot of beneficial ones out there. It will also kill fish in ponds and birds if directly sprayed. (young in nests)
There are much better ways of dealing with the problem of west nile.