Good Riddles

Question: Countless blades that bend with a touch,
exploited by kids who want to make a buck.

What am I?

Question: My first doth affliction denote,
which my second is destined to feel.
And my whole is the best antidote,
that affliction to soften and heal.

What am I?

Question: It smells like blue paint,
pours like green paint,
and it looks like a red truck.

What is it?

Question: What is bought by the yard by is worn by the foot?

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

[What do we have?]