For the main floors, dark grey foam tiles will be used. This material is better than carpet because it doesn not hold any odours or dirt, they are easy to clean, and it is more comfortable. These specific foam mats are durable and are generally used in daycares. This proves its reliance and durability.
http://www.walmart.com/ip/Norsk-Stor-240247-Multi-Purpose-Work-and-Play-Safety-Interlocking-Foam-Flooring-Recyclamat-16-Square-Feet-Gray-4-Piece-Set/13253270?action=product_interest&action_type=title&item_id=13253270&placement_id=irs-106-t1&strategy=PWVUB&visitor_id&category=&client_guid=6679c3c1-167b-4576-850a-d2e22fb3936a&customer_id_enc&config_id=106&parent_item_id=13253269&parent_anchor_item_id=13253269&guid=aba1c502-9d95-4c2f-ae38-58a9ba7688c2&bucket_id=irsbucketdefault&beacon_version=1.0.1&findingMethod=p13n
Comments
To be honest, I liked the rubber idea better. I understand where you're coming from with the unpleasant odor but the foam is not durable at all. From personal experience, I know that these foam mats get scratched and torn very easily. This will be a pain because after a little while they will look old and worn out, even though they're fairly new.
To add on to my previous comment, I feel that the rubber tiles are much more comfortable and softer for sitting.The foam tiles look very hard and stiff, but that could be just how it looks in the picture.