My husband has schizophrenia and smokes marijuana
That sounds like a really distressing situation and it must be difficult to cope with. My uncle also has schizophrenia and relies heavily on drug use.
While our situations are considerably different, I hope you know you are not alone and remember to prioritise your own mental health and physical health.
I recommend getting in contact with a psychologist, as they can help you navigate the situation and provide adaptive coping mechanisms to overcome these hardships.
Additionally, if your husband continues to respond negatively I also recommend contacting 1800 737 732 which aids individuals that experience domestic violence 24/7.
What I can suggest is to substitute weed with something less harmful. For instance, you can consider using a CBD vape pen. Still, it's essential to focus on the more immediate concerns related to your husband's health and safety. Encouraging him to seek professional help for his schizophrenia and substance use is the first step.