I do not ask for any help or opinion from such people. If they unnecessarily opine and interfere, I just listen to them and do not give them serious response.
Firstly, I would prefer myself to stay away and avoid him simply because nobody wants to be in company of such a person. This kind of people, I know, will not do any good to me hence neglect them from the word go...
I know how irritating these kind of people are. They just want attention from you and the best way to deal with them is to ignore them,never give any importance.