I was that "chill out, and let them walk all over you" person for someone that started helping our company as a contractor. He had a very dominant personality,

I was that "chill out, and let them walk all over you" person for someone that started helping our company as a contractor. He had a very dominant personality, of which no one at our 4 person shop had. A year later the CEO announced he was our VP of engineering. He made comments about women, made inappropriate jokes a lot. The remaining 3 years that I was at the company, his personality fused into everything and every new hire. Everyone picked up his attitude, jokes and lack of seriousness. Could easily be a textbook definition of how toxic behavior spreads. Even me, eventually I found myself cracking jokes about customers to please this person. I finally left, comically after this person left - the company now dangling and struggling. I joined a new company, and I found it refreshing to see people take things seriously again. Huge difference. So yes, you should GTFO if this happens to you.