What does this rebus puzzle means ?

I taste better than I can smell. Who am I?

A couple went on a climbing trip. But only the husband returned from the vacation and said that his wife slipped off while climbing and died. On investigating, the local sheriff arrested him saying, 'Your travel agent called. You murdered your wife.'

The man did not inform anyone about the trip. Then how was the agent so sure that it was a murder?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Can it be possible to build a house that has all its four walls facing towards the South?

John was a very careless driver, so his owner Jacob gave him an offer that he will get an incentive of Rs.30 for every bottle box he delivered without breaking it and he will be charged Rs.90 for every bottle box he broke. Jacob gave John 100 bottles-box to deliver. After delivery, Jacob paid John Rs.2400. How many bottles-box did John break?

Count the squares in the matchstick puzzle below?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

Replace the question mark with the correct number in the below-given picture?

How can you take 2 from 5 and leave 4?