This time of year, toddlers should smell like grass, sunscreen, fresh water, maybe chlorine, and sweat (which is strangely sweet and pleasant to me on my son and kids I have babysat before he was born). Maybe lavender after a bath.
Not Axe. That stuff doesn't smell good on anyone, but is best reserved for 13 year old boys hoping to garner the attention of a special someone. I'm convinced some mom somewhere invented it to make sure that no 13 year old gets laid too early.