Can you leave your baby/toddler in the car while you pump gas?

Annie • 23 years old. Diagnosed with PCOS & hypothyroidism. Married for 5 years. Ellie Rose 💕👶🏼 & Millie Jean 💕🤰🏼
Saw a post and it made me think. Do you need to literally get your kid out (while you're around those intense fumes) while you pump? I pay with a credit card so I don't have to go in the store to pay. If yes, do you leave the windows down or up?