study questions

each question needs to be 150-200 words with 1 ref:

1)
 

A police officer pulls over a car for speeding. As  he approaches the vehicle, he notices the smell of marijuana. The  officer gets everyone out and searches the car. He does not find any  marijuana during his search. Was this search legal? Why or why not?  Explain how reasonable suspicion and probable cause figure in your  answer

2)why do you believe the Supreme Court changed the requirements to  establish probable cause for a warrant, between the "two-pronged test"  used in Aguilar and the "totality of circumstances test" used in Gates?  Explain