Since moving into a new house we are constantly ill including both my dogs. Is this house the cause?
Sick building syndrome is common and comes in many forms. Here’s an article that explains it better:

https://en.m.wikipedia.org/wiki/Indoor_air_quality

Also, it could be glue “outgassing”. 

Formaldehyde (in glue) out-gasses for several months after it it is made into building materials. Products like particle board in countertops, OSB board in underlayment, etc. are likely items that can out-gas. See here:

https://rarediseases.org/rare-diseases/formaldehyde-poisoning/

You can have your house tested or there are home air tests you can do yourself.