My honda sky sgx50 sudenlly emits so Much smoke

I took it for a ride yesterday and it was fine but just a while ago I started it and noticed excessive withe smoke coming out the exhaust pipe and when i gave it some gas so much smoke came out that I thought someone would call the fire department. Some extra info: 2 STROKE, but the oil goes in a diferent tank, 50cc, and I recently used a diferent brand of oil but still 2 stroke synthetic oil. Anyways I appreciate any suggestions