wouldn't touch with a ten-foot pole

wouldn't touch someone or something with a ten-foot pole

Cliché would not be involved with something under any circumstances. I know about the piece of vacant land for sale on Maple Street. I wouldn't touch it with a ten-foot pole because there used to be a gas station there and the soil is polluted. Tom said he wouldn't touch Sally with a ten-foot pole.
See also: pole, touch