Here are a few steps that you can take to protect your email from being used to spread malware and viruses to your contacts:

1. Ensure your email account is secure and all passwords are changed regularly.
2. Be aware of phishing emails that attempt to install malicious software or get access to sensitive information.
3. Ensure your anti-virus software is up-to-date and scan all emails that you receive.
4. Be careful when opening attachments or clicking links that have been sent in suspicious messages.
5. Enable two-factor authentication to protect yourself against account hijacking.