Final answer:
The question conflates driving rules regarding broken white lines, which indicate lane changing is allowed, with details about inhalant anesthetic compounds. Modern inhalant anesthetics are less flammable than diethyl ether.
Step-by-step explanation:
The question seems to involve a misunderstanding, conflating traffic rules about broken white lines with information about inhalant substances. For clarity, broken white lines on roadways indicate that you can change lanes or overtake vehicles when it is safe to do so, similar to the freedoms you have while driving in clear conditions without obstructions.
However, since the rest of the question mentions inhalants and anesthetics, it's important to address those aspects separately. Modern inhalant anesthetic compounds, such as halothane, isoflurane, and desflurane, among others, are indeed less flammable than diethyl ether, which was used in the past. These modern anesthetics have improved safety profiles compared to their historical counterparts.