An improved endotracheal tube system and method of use is provided. The improved endotracheal tube system includes a standard endotracheal tube, a housing with a first tube that may be positioned within an endotracheal tube and a second tube adapted for attachment to a bag-valve mask. The housing has a CO2 detector within it. The improved endotracheal tube system may also have a stylet positioned within the endotracheal tube and the housing. The stylet may have a handle attached to it for easy removal from the housing.