Possible Clues:

• Stubborn or unyielding
• Transformed into beast such as a mule
• Stubbornly persistent
• Blindly stubborn
• Dogged old boy's swallowed, consuming can
• Pig-headed old boy at home in Texas perhaps
• Persistent smell returns, say, catching current
• Crashing into beast like mule?
• Stubborn occasionally, that idiot's around wearing award
• Uncompromising student once having say about home