Lesson2Topic 3:Secondhand Smoke Click on the slideshow below. The slides will autoplay unless you click the pause button. You may also use the arrow keys (or swipe left and right) to move between slides. When the slideshow is complete, press the escape key or click on the X in the upper right corner of your screen to close the slideshow and return to this screen. When you have completed your review, scroll down to click the CONTINUE or NEXT TOPIC button to mark this topic complete and proceed to the next topic in this lesson. Slideshow not working? Click here to download.