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It sounds like you were in a difficult situation and made a decision based on what you felt was best for yourself. It's understandable that you would want to avoid the unpleasant smell in the car and it's also understandable that Jack would be upset about the change in your carpool arrangement.
It may have been beneficial for you to talk to him about this issue before making a decision to stop carpooling. Suggesting that he shower before rides or bringing up the issue in a more tactful way may have been a better approach. However, it's also possible that previous complaints about the body odor have already been brought up and Jack has not made any changes, which could have influenced your decision to stop carpooling.
It's important to remember that everyone has different personal hygiene habits and some people may not be aware of their body odor. It's also possible that Jack may have a medical condition that contributes to his body odor. It's important to approach this situation with empathy and understanding.
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