Nicotine. Nicotine is the drug found in tobacco which vaporises into smoke when tobacco leaves are burnt. In its pure form it is a rapid acting, extremely toxic drug, that has often been used as an agricultural insecticide.
Short answer: do not turn forward facing until you literally have to b/c he has outgrown the seat. Rear facing seats are outgrown when 1 of 2 things happens: 1)the weight limit is reached - 30-35lbs on current convertible seats OR 2)there is less than 1 of seat above the child's head.Most kids easily make it to 2 years still rear facing.ear facing seats are outgrown when 1 of 2 things happens: 1)the weight limit is reached - 30-35lbs on current convertible seats OR 2)there is less than 1 of seat above the child's head. Most kids easily make it to 2 years still rear facing.
These are much more conservative than state laws, in general (for instance, everyone should be in a booster seat from about age 4 to at least age 8) but remain less conservative than some of the european standards (for instance, the European Child Safety Alliance recommends that children remain in rear-facing carseats until 3 years of age).