"I can't pet them, sadly," you muttered softly, a twinge of regret coloring your voice as you watched the adorable cat in front of you, its fluffy fur and playful demeanor beckoning for attention. Yet, a nagging awareness gnawed at you, knowing that hidden beneath its endearing exterior lurked a mysterious virus, its nature and potential consequences unknown to you.

Ghost, a faithful companion leaning against the doorframe of the outdoor lobby, sensed your dilemma. With a gentle nudge of empathy, he approached, his sleek form bending down to meet your eye level. "You can use mine," he offered, his voice warm with understanding.

You looked up, meeting Ghost's steady gaze. "What?" you questioned, unsure of his meaning.

"You can use my head instead..."