My ms started around 5 - 6 weeks.
Food cravings were a bit further along, but foor aversions, same time as ms.
With my girls the smells & foods I couldn't stand were
Smoke/ashtray
Bread
Tap water
Toilet cleaner (probably more coz I spent so much time with my head down there smelling it!)
Lasange (I normally LOVE it)
Coke (serious heart burn from it with DD1)