When you say 'advice', what kind of things are you talking about? If it's like "Don't eat that sandwich, the dog licked it!" I'd be inclined to pay heed.
If it's more like "To be a great [designer/developer/emperor], you need to oil your beans each morning and scratch a crocodile's tongue each night," maybe just tell them kindly to stop.
If it's actually related (even tangentially) to what you do, there's probably a good reason for it and you should definitely try to (tactfully) find out why they feel you need to know these words of wisdom.