Good Riddles

Question: What can you smell but not see. And can be deadly, too.

Question: I can survive a nuke People hate me We live everywhere We watch you everynight Our names start with a DICK What am I?

Question: When you don't have enough of me, you feel a kind of gloom. But when you are using me, it is time that you consume. What am I?

Question: A man travels by wagon,
brings joy each evening,
but depression by the morning.

Who is he?

Question: We have what we did not find; what we did find we left behind.

[What do we have?]