Sickness and cleanliness??

My EX-MIL is trying to tell me that the reason my kids and husband have been sick so much this year is because my house is not cleaned to her standards.

I’m not the best housewife I suppose, it’s new to me to be at home all the time.

She does what most people consider as spring cleaning every single day. Mind you she only ever had one kid, who is now almost 30 and moved out 10 years ago.

Am I crazy?? Should I be doing cleaning to that extent everyday??