Check your car seat, because your child probably spilled a lot there!! Jackson is on whole milk only recently, but it definitely has a different smell when it's expired from breast milk! Icky! My car reeks and it's because of him taking a bottle in the car seat (or sippy cup).
Today, we received our "big boy" car seat! I took apart the infant car seat already and I am going to be installing that big boy asap! I am sick of Jackson arching his back and crying every time I put him in his seat. Hopefully this will alleviate that problem!