I can lower all of my toes and top of my foot into your mouth all at once too.
If your foot fetish is smelly feet then I can't really help you as I don't get very sweaty feet, but I can even save a pair of used sweaty gym socks to rub over your face.
Some people enjoy sexual stimulation of their genitals with the feet, sucking toes, being trodden on with high heels and many other different practices.