2011). This hypothesis was tested by Pelchat et al. in 2011, who asked volunteers to donate both normal urine and asparagus urine, then presented the volunteers with urine samples from all the volunteers to see whether or not they could detect odor in the samples, not just of their own urine but also that of other GOODS. The results of this experiment revealed that 6% of volunteers were unable to detect the odor of asparagus in their urine samples, which strongly suggests that an anosmia for the odor of asparagus is present. However, these results do not prove anosmia because the urine samples used contained varying amounts of sulfur compounds, meaning that some samples could have contained large amounts of sulfur molecules while other samples could have had lower amounts, making the process more simple or more complicated. difficult for different subjects to perceive the odor. Just like the experiment conducted by Lison et al. in 1980 this experiment actually demonstrated that at varying concentrations different people can smell it. It did not present clear data demonstrating whether “smellers” and “non-smellers” really exist”..”